LTE MAC层英文协议36321-930

3GPP TS 36.321 V9.3.0 (2010-06)

Technical Specification

3rd Generation Partnership Project;

Technical Specification Group Radio Access Network;

Evolved Universal Terrestrial Radio Access (E-UTRA);

Medium Access Control (MAC) protocol specification

(Release 9)

The present document has been developed within the 3rd Generation Partnership Project (3GPP TM) and may be further elaborated for the purposes of 3GPP. The present document has not been subject to any approval process by the 3GPP Organizational Partners and shall not be implemented.

This Specification is provided for future development work within 3GPP only. The Organizational Partners accept no liability for any use of this Specification. Specifications and reports for implementation of the 3GPP TM system should be obtained via the 3GPP Organizational Partners' Publications Offices.

Keywords

UMTS, radio

3GPP

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Copyright Notification

No part may be reproduced except as authorized by written permission.

The copyright and the foregoing restriction extend to reproduction in all media.

© 2010, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC).

All rights reserved.

UMTS™ is a Trade Mark of ETSI registered for the benefit of its members

3GPP™ is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners

LTE™ is a Trade Mark of ETSI currently being registered for the benefit of i ts Members and of the 3GPP Organizational Partners GSM® and the GSM logo are registered and owned by the GSM Association

Contents

Foreword (5)

1Scope (6)

2References (6)

3Definitions and abbreviations (6)

3.1Definitions (6)

3.2Abbreviations (7)

4General (8)

4.1Introduction (8)

4.2MAC architecture (8)

4.2.1MAC Entities (8)

4.3Services (9)

4.3.1Services provided to upper layers (9)

4.3.2Services expected from physical layer (9)

4.4Functions (9)

4.5Channel structure (10)

4.5.1Transport Channels (10)

4.5.2Logical Channels (11)

4.5.3Mapping of Transport Channels to Logical Channels (11)

4.5.3.1Uplink mapping (11)

4.5.3.2Downlink mapping (11)

5MAC procedures (12)

5.1Random Access procedure (12)

5.1.1Random Access Procedure initialization (12)

5.1.2Random Access Resource selection (13)

5.1.3Random Access Preamble transmission (14)

5.1.4Random Access Response reception (14)

5.1.5Contention Resolution (15)

5.1.6Completion of the Random Access procedure (16)

5.2Maintenance of Uplink Time Alignment (17)

5.3DL-SCH data transfer (17)

5.3.1DL Assignment reception (17)

5.3.2HARQ operation (19)

5.3.2.1HARQ Entity (19)

5.3.2.2HARQ process (19)

5.3.3Disassembly and demultiplexing (20)

5.4UL-SCH data transfer (20)

5.4.1UL Grant reception (20)

5.4.2HARQ operation (21)

5.4.2.1HARQ entity (21)

5.4.2.2HARQ process (22)

5.4.3Multiplexing and assembly (24)

5.4.3.1Logical channel prioritization (24)

5.4.3.2Multiplexing of MAC Control Elements and MAC SDUs (25)

5.4.4Scheduling Request (25)

5.4.5Buffer Status Reporting (25)

5.4.6Power Headroom Reporting (26)

5.5PCH reception (27)

5.6BCH reception (27)

5.7Discontinuous Reception (DRX) (27)

5.8MAC reconfiguration (29)

5.9MAC Reset (29)

5.10Semi-Persistent Scheduling (29)

5.10.1Downlink (30)

5.10.2Uplink (30)